'''
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with self work for additional information
 * regarding copyright ownership.  The ASF licenses self file
 * to you under the Apache License, Version 2.0 (the
 * "License") you may not use self file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http:#www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
'''
from base.graph.Node import Node

'''
 * This is the subclass of "fluid" nodes, ie nodes that are "holes" in pattern
 * matching.
'''
from abc import ABC, abstractmethod

class Node_Fluid(Node, ABC):
    # param Object label
    # result protected
    def __init__(self, label):
        super().__init__(label)
    

    #@Override
    # param 
    # result boolean
    # @abstractmethod
    def isConcrete(self):
        return False
    

